Preheat the oven to 350 degrees F (180 degrees C).
In a bowl combine the flour, sugar, and cocoa powder.
Mix the butter into the bowl with the dry ingredients. Stir until well combined, the mixture is dry, and doesn’t form a dough.
Lightly grease the small slice tray then add the base and press down so it is flat.
Bake the base in the oven for 8 minutes then remove and let cool.
Apricot Filling
In a bowl add the condensed milk and orange food coloring. This step is done here so you can easily mix and adjust the color. Often food colors are bought in packs of four and the orange color requires 1 drop of red to 3 of yellow. Check packets for specific instructions.
Add the apricots and coconut and stir well so well distributed.
Add the apricot mixture to the slice pan on top of the chocolate base. Smooth and press down to create an even layer.
Bake in the oven for 20 minutes, it will look slightly dry but will not brown. Leave aside to cool for at least 30 minutes before adding the chocolate layer.
Chocolate Topping
Place the chocolate and butter in a heatproof bowl over a pot with about 1 inch of water. Slowly heat the water which will heat the chocolate. Stir occasionally and monitor so it doesn’t overheat.
To Assemble
Using a butter knife drizzle the chocolate back and forth over the top of the apricot slice. This can be in parallel lines, crisscrossed, or similar. Continue to add until all the chocolate is gone. Leave for 30 minutes for the chocolate to set.
Cut the slice to serve. This is a very rich slice so small bite-sized pieces work best, but if desired it can also be cut into more generous serving proportions as a dessert slice.